Grant Hartwig vs. J. J. Putz — Career Comparison

On the career pitching numbers, J. J. Putz posted a stronger line than Grant Hartwig. J. J. Putz posted stronger numbers in ERA (3.08 vs 5.14) and WHIP (1.184 vs 1.429). By the career numbers, J. J. Putz had the better of this comparison — though ERA and WHIP alone don't account for era, park factors, or the defenses each pitcher worked behind.